diff --git a/config/cosmic.conf b/config/cosmic.conf
index fd2d56d..b73fc95 100644
--- a/config/cosmic.conf
+++ b/config/cosmic.conf
@@ -20,6 +20,35 @@
 
 $mainMod = SUPER
 
+# --- Tiling -------------------------------------------------------------
+#
+# COSMIC ships with autotile off, so a new window opens floating, at whatever
+# size the application asked for, on top of what you were already looking at.
+# This is the setting that makes window placement automatic: each new window
+# takes a share of the screen instead.
+#
+# It applies immediately and everywhere. `autotile_behavior` is a separate
+# COSMIC key that defaults to Global, which retiles workspaces that already
+# exist; the other value, PerWorkspace, arms only workspaces created from now
+# on. There is no conf key for it because the default is the one worth having
+# -- if you want the other, set it in cosmic-settings and this file will not
+# fight you over it.
+#
+# Super+Y still toggles tiling for the current workspace on its own, so a
+# workspace you want to keep floating does not need this turned off.
+#
+# Gaps are here rather than in the theme block because they are only visible
+# once windows tile: with autotile off nothing is laid out, so nothing has a
+# gap. gaps_out is doubled so the screen edge reads as deliberate margin
+# rather than as one more seam.
+$gap = 4
+
+general {
+    autotile = true
+    gaps_in  = $gap
+    gaps_out = $gap * 2
+}
+
 # --- Launcher -----------------------------------------------------------
 #
 # The hyprcosmic profile does not start cosmic-launcher or cosmic-app-library,